Crossword Clue:

One plus one

Answer	Crossword Clue
ELEVEN	One plus one?
PAIR	One plus one
MESON	One quark plus one antiquark

ARFARF	Spot's answer to "What's one plus one?"?
ANY	One plus
TRI	Bi-, plus one
TRIO	Duet plus one
TRIO	Duet, plus one
AGE	Twenty-one plus.
NONET	Octet plus one
TRIO	Pair plus one

FOUR	Crowd plus one
OCTA	Septi- plus one
ENNEAD	Octad plus one
TEN	Nonet plus one
TETRA	Tri, plus one
HEXA	Penta- plus one
TRI	Bi- plus one
OCTO	Septi- plus one

BOGEY	Par plus one
TRIO	Duo plus one
ENNEA	Octo plus one
DEUCE	Ace plus one
ELEVEN	Ten plus one
DECA	Nona- plus one
TRI	Bi plus one
TETRAD	Trio plus one

TETRA	Tri- plus one
QUAD	Triplet plus one
OCT	Hept- plus one
OCTA	Hepta plus one
PAR	Birdie plus one
TETRA	Tri plus one
OCTA	Hepta- plus one
ENNEA	Octa- plus one

PENTA	Tetra- plus one
OCTET	Septet plus one
NONA	Octa- plus one
DUET	Solo plus one
ELEVENPLUSTWO	Twelve plus one?